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A woman and her dog are out for a morning run to the river, which is located 4.65 km away. The woman runs at 3.95 m/s in a straight line. The dog is unleashed and runs back and forth at 5.40 m/s between his owner and the river, until she reaches the river. What is the total distance run by the dog (in meters)?
A heat pump with a coefficient of performance of 4.9 absorbs heat from the atmosphere at a rate of 30kW. At what rate is it doing work
If the force on the ball increases linearly for 4.00 ms, holds constant for 20.0 ms, and then decreases linearly to zero in another 4.00 ms, what is the maximum force on the ball
Suppose that an Egyptian farmer claims to have discovered a linen burial cloth used during Egypt's Middle Kingdom some 4000 years ago, How old is the cloth
question a balloon is rubbed with a wool glove. the two items attract one another with a force of strength 0.6 n when
The crankshaft in a race car goes from rest to 3480 rpm in 2.7s. What is the crankshaft's angular acceleration
A 56 kg pole vaulter running at 12 m/s vaults over the bar. Her speed when she is above the bar is 1.3 m/s. determine her altitude as she crosses the bar
an uncharged capacitor and a resistor are connected in series to a source of emf. if 6.00 v c 21.0 microf and r 100
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 4.60 m/s2 over the distance of 20.80 cm. It then decelerates at the constant rate of 1.03m/s2 (because of friction), until it again comes to..
A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 4 m down a q = 25° incline. The sphere has a mass M = 4 kg and a radius R = 0.28 m. Illustrate what is the translationg kinetic energy
A 5.43 kg block free to move on a horizontal, frictionless surface is attached to one end of a light horizontal spring. find the speed of the block at the equilibrium position of the spring
The electrons in a rigid box emit photons of wavelength 1484 nm during the transition. How long is the box in which the electron are confined
To measure the speed of a bullet, the following situation is setup. A wooden block(m=0.50kg) is put on top of a fencepostwith a height of 1.5m. The bullet (m=.010kg) strikes theblock from a perfectly horizontal direction and remains embedded init.
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